Mont. Code Ann. § 2-1-102
The sovereignty and jurisdiction of this state extend to all places within its boundaries as established by the constitution, excepting such places as are under the exclusive jurisdiction of the United States.
History: En. Sec. 40, Pol. C. 1895; re-en. Sec. 21, Rev. C. 1907; re-en. Sec. 20, R.C.M. 1921; Cal. Pol. C. Sec. 33; re-en. Sec. 20, R.C.M. 1935; R.C.M. 1947, 83-102(part).